Circles

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Circles

How to solve these problems:

2. Plug in the given information and then solve the equation for either the radius or diameter.

1. Look at the​ information given and start with either the circumference formula or area formula. Write the formula down.

How to solve these problems:

4. Reread the problem to make sure you have found the correct value the question is asking for. ​

3. To solve these equations, divide by any numbers first. Then take the square root if you are working with the area formula.

Fill in the Blank

#1: Find the RADIUS of a circle, given the area is 28.26 square meters. Use 3.14 for pi.

radius = _ meters

Fill in the Blank

#Find the DIAMETER given the circumference is 21.98 feet. Use 3.14 for pi.

diameter = _ feet

Fill in the Blank

#3: Find the RADIUS of a circle with the circumference of 20 inches. Use 3.14 for pi. Round the the nearest hundredth.

radius = ___ inches

Fill in the Blank

#4: Find the DIAMETER of a circle with the area of 12.56 square meters. Use 3.14 for pi.

diameter = _ inches

Fill in the Blank

#5: Find the CIRCUMFERENCE of a circle given the area is 452.16 square feet. Use 3.14 for pi. Round to the nearest hundredth.

circumference = ____ feet

Fill in the Blank

#6: Find the AREA of a circle given the circumference is 18.84 yards. Use 3.14 for pi. Round to the nearest hundredth.

area = ____ square yards

Poll

After this review, I feel like I understand this concept at a _ level.

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